Sink trap



A. L. DE LEEUW SINK TRAP Filed July 14 192s Patented July 29, 1924.

narrate stares 7 1,503,118 PATENT GFFHCE.

ADOLPH L. DE LEEuw, or. PLAINFIELD, NEW JE sEY.

SINK

Application filed July 14,

To all whom, it may concern.

Be it known that I, ADOLPH L. DE LEEUW,' a citizen of the United States, and residing at Plainfield, in the county of Union and State of New Jersey, have invented a new and Improved Sink Trap,of which the followingspecification is a full disclosure.

This invention relates to sink-traps; that is those devices commonly used in connection with sinks, wash-basins and various other plumbing fixtures for preventing gases and foul odors from backing up through the drain-pipe and intothe room where the fixtureis located. 7 v

Many devices of this nature have heretofore been constructed, most of which have included apipe having a return bend of substantially S-shape forming apocket which constantly remains full of water and thereby forms a water-seal in the drain. These devices, due to their construction and location occasionally become clogged by threads, hairs and other foreign substances and therefore haveto be cleaned out.

To permit of this cleaning and also to permit of the recovery of articles which sometimes accidentally enter the drain the traps are each usually provided with ascrew plug, located at its lowest point, which plug is adapted to be unscrewed to drain the water from the trap and give access thereto for cleaning purposes.

This cleaning operation has heretofore been a difficult and decidedly unpleasant one I as the screw-plug was located beneath the trap at'a' point where it was dilii'cult to reach and manipulate, and when the plug was removed the water in the trap necessarily had to be. caught and disposedof. Furthermore as the clean-cut plug was located below the water level in the trap, Wear in the threads and washers sometimes caused leakage. I

This invention has for an object to provide a sink-trap which may becleaned easily and from which lost articles may be recovered without difliculty and without disturbing or removing the water-seal in the trap.

Other objects and advantages will be in part indicated in the following description and in part rendered apparent therefrom in connection with the annexed drawings.

To enable others skilled in the art so fully to apprehend the underlying features hereof that they may embody the same in the various ways contemplated by this invention,

TRAP.

1923. Serial No. 851,565.

drawings depicting a preferred typical construction have been annexed as a part of this disclosure and, in such drawings, like characters of reference denote correspond ing parts throughout all the views, of which: Fig. 1 isa front elevation of a sink trap embodying the present invention. Fig.2 is a central vertical section thereof. Fig. 3 is a plan of Fig. 1. Fig. 4:is a vertical section of the trap casing and Fig. 5 is a horizontal section onthe line 55 of Fig. 4.

Referring more particularly to the drawings, the improved trap preferably comprises a casing l'provided with an inlet2 and an outlet 3.. This casing is formed, near its upper end with a circular chamber 4 within which is removably secured a cylindrical receptacle or receiving cup 5 provided with an inlet opening 6' in register with the inlet 2. This cup, due to its formation and location, receives and retains any solid substance entering the trap and thereby prevents the water-pocket and drain-pipe from becoming clogged, and also afiords easy means of recovering any article accidentally dropped into the trap. The cup is provided with an annular seat 7, which bears against a like seat 8 formed in the casing 1, and is held in the chamber 4: with the seats in contact, by the pressure of a-thumb screw S threaded through a cap 9removably held to the casing 1 by screws 10. The casing is formed, beneath the chamber 4:, with a wall 11 and walls 12 and 13', transverse to the 'wall 11. The wall 11 extends downwardly fromthecasing and terminates abovethe bottom wall 14 of the casing, whereby ports 15fan'd16 are provided. The walls 12'and 13 extend upwardly fromthe bottom wall le-atopposite sidesof the outlet 3 and terminate belowxthe chaniber 4. These upstanding walls form pockets? which, in the operation of the trap, normally remain filled with water to the level W thus forming a water seal between. the outlet 3 and the inlet 2. The walls 11, 12 and 13 and the ports 15 and 16 form a circuitous passage throu h which the water flows in passing from the inlet 2 to the outlet 3 located co-axially with respect to said inlet.

The outlet end of the receiving. cup is preferably of reduced diameter and closed by a screen 17 to retain solid substances in the cup. The cap 9 may readily be removed from the casing by loosening the thumbscrew S and slightly rotating the cap 9 tobring apertures 18 into register with the heads 10 of the screws 10. After the cap is removed the cup 5 is free to be withdrawn from the chamber 4.

To insure that the opening 6 will always be in register with the inlet 2 when the cup is in the chamber, the cup is formed with a slot 19 which registers with a pin 20 fixed in the wall of the chamber 4:.

The course of flow of water through the trap is indicated by arrows in Figs. 2 and 4.

From the foregoing it will be observed that where there has been provided a trap which may be cleaned or emptied without difficulty and in which the water-seal remains unbroken and undisturbed during the removal of obstructions or lost articlesf Without further analysis, the foregoing will so fully reveal the gist of this invention that others can, by applying current knowledge, readily adapt it for various utilizations by retaining one or more of the features that, from the standpoint of the prior art, fairly constitute essential characteristics of either the generic or specific aspects of this invention, and, therefore, such adaptations should be, and are intendedto be, comprehended within the meaning and range of equivalency of the following claims.

Having thus revealed this invention, I claim as new and desire to secure'the followingcombinations and elements, or equivalents thereof, by Letters Patent of the United States:

1. A sink-trap comprising a casing provided with inlet and outlet openings; transverse walls within said casing aflording a water-pocket, a chamber formed within said casing adjacent said inlet; and acylindrical cup removably secured within said chamber.

2. A trap for plumbing fixtures comprising a substantially: rectangular unitary structure provided. with aligned inlet and outletopenings and a circuitous passage con-,-

necting said openings and providing a water pocket; a circular chamber formed with in the upper end of said casing; a cylindrical receptacle within said chamber and provided with an opening adapted to register with saidinlet opening; a pin-and-slot connection between said receptacle and said casing to prevent rotary movement of said receptacle in said chamber; and means for holding said receptacle against endwise movement.

3. A sink-trap comprising a casing provided with inlet and outlet openings; a chamber formed within said casing adjacent said inlet; a wall depending from said casing; walls, transverse to said first-mentioned wall, projecting upwardly toward said chamber, said walls providing a water pocket adapted to retain a water-seal; a cup within said chamber adapted to retain any solid substance entering therein; and means permitting the removal of the cup without disturbing said water-seal.

4. In a sink-trap, a casing provided with inlet and outlet openings; a receptacle within said casing provided with an opening in, register with said inlet; a screen closing one end of said receptacle, and means, includinga cap removably secured to said casing for holding said receptacle within said casing.

5. In a sinktrap, a casing formed with a chamber and an annular seat, a receptacle removably held within said chamber and provided with an annular seat adapted to engage said first-mentioned seat; a cap removably secured to said casing; and a thumb-screw threaded through said cap and contacting with said receptacle for forcing said annular seats together.

6. In a sink-trap including a casing pro vided with inlet and outlet openings and a water-pocket, a receptacle removably held within said casing and formed with an opening adapted to register [with said inlet; a screen closing one end of said receptacle and adapted to retain solid substances entering the receptacle; and means for registering the opening in the receptacle with the inlet opening in the casing. o

- In witness whereof, I hereunto subscribe my name, as attested by the two subscribing. witnesses.

.ADOLPH L. DE LEEUW. l/Vitnesses:

ADELE L. Du LEEUW, H. J. HAUGK. 

